<ul>
   <li><a href="/" class="a_p">Trang chủ</a></li>
   <li class="li_services">
      <a href="/dich-vu.html" class="a_p">Dịch vụ</a>
      <?include('vic_subservices.php')?>
   </li>
   <li><a href="/blog.html" class="a_p">Blog</a></li>
   <li><a href="/lien-he.html" class="a_p">Liên hệ</a></li>
</ul>